From observation, I’d agree with you. I haven’t formally looked at our data, but that might be a nice exercise.
GP data should be better than inpatient data, though a lot of older people have low sodiums.
Best wishes,
Brian
> On 31 May 2017, at 11:53, Alan Dodd <[log in to unmask]> wrote:
>
> This is something I've done a bit of work on, both in paediactrics (See ACB Annals Vol 52 p44-52) and in adults (presented in ACB southeast meeting in 2015).
> There's no doubt to me that the Harmony range is wider than they ought to be; I've not been able to access the Path Harmony website for a while but I'm sure it said the Harmony range was based on consensus and confirmed against some inpatient data (which was pragmatic, but less than ideal given the nature of inpatients). There's understandably a lot of resistance to the idea of abandoning a Path Harmony range though!
> When I looked at several years' of GP data in a catchment area of ~700,000, GP data is much tighter than inpatients, both at the bottom of the range AND at the top. "General" ranges might well be around 136-143 mmol/L for a 95% range, although I've seen both age and gender differences that modify this by a significant amount, even in adults; I suspect the differences would merit different ranges. Full details will hopefully follow soon in publication.
>
> Alan.
>
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